Sin will remain in the zone it went to when it died (which is usually the graveyard)
Some are so good that they're worth building a deck around
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From memory Shadowspear was around five USD the first few weeks after THB released Because of its relevance in the Theros story arc, I think were mainly going to see it getting reprinted in supplemental sets or universes beyond sets because reprinting it in Amonkhet or Lorwyn would make little sense
Unfortunately, her low Strength has kept her from making a splash in the meta so far, but it's possible that a support-focused deck will find a way to make use of her
Being able to ramp the best land out of the top four cards of your deck at instant speed is already very useful, but the fact that you can still draw one of them into your hand as a fall back means that you wont have a major downside (see Growth Spiral for a similar effect)
